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Sunspot Light Walls Suppressed by Nearby Brightenings

文献类型：期刊论文

作者Yang, Shuhong1,2; Zhang, Jun1,2; Erdelyi, Robertus3,4; Hou, Yijun1,2; Li, Xiaohong1,2; Yan, Limei5
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2017-07-01
卷号843期号:1
关键词Sun: chromosphere Sun: photosphere Sun: UV radiation sunspots
ISSN号2041-8205
DOI10.3847/2041-8213/aa7b2c
文献子类Article
英文摘要Light walls, as ensembles of oscillating bright structures rooted in sunspot light bridges, have not been well studied, although they are important for understanding sunspot properties. Using the Interface Region Imaging Spectrograph and Solar Dynamics Observatory observations, here we study the evolution of two oscillating light walls each within its own active region (AR). The emission of each light wall decays greatly after the appearance of adjacent brightenings. For the first light wall, rooted within AR 12565, the average height, amplitude, and oscillation period significantly decrease from 3.5 Mm, 1.7 Mm, and 8.5 minutes to 1.6 Mm, 0.4 Mm, and 3.0 minutes, respectively. For the second light wall, rooted within AR 12597, the mean height, amplitude, and oscillation period of the light wall decrease from 2.1 Mm, 0.5 Mm, and 3.0 minutes to 1.5 Mm, 0.2 Mm, and 2.1 minutes, respectively. Particularly, a part of the second light wall even becomes invisible after the influence of a nearby brightening. These results reveal that the light walls are suppressed by nearby brightenings. Considering the complex magnetic topology in light bridges, we conjecture that the fading of light walls may be caused by a drop in the magnetic pressure, where the flux is canceled by magnetic reconnection at the site of the nearby brightening. Another hypothesis is that the wall fading is due to the suppression of driver source (p-mode oscillation), resulting from the nearby avalanche of downward particles along reconnected brightening loops.
WOS关键词DYNAMICS-OBSERVATORY SDO ; PLASMA EJECTIONS ; FLUX EMERGENCE ; BRIDGE
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000404731200006
出版者IOP PUBLISHING LTD
资助机构ESA ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11373004) ; ESA ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11373004) ; ESA ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11373004) ; ESA ; Norwegian Space Centre ; National Natural Science Foundations of China(11673035 ; Youth Innovation Promotion Association of CAS(2014043) ; STFC (UK) ; Royal Society ; Chinese Academy of Sciences Presidents International Fellowship Initiative(2016VMA045) ; National Postdoctoral Program for Innovative Talents(BX201600159) ; 11533008 ; 11373004)
源URL[http://ir.iggcas.ac.cn/handle/132A11/46831]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Yang, Shuhong
作者单位1.Chinese Acad Sci, CAS Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
2.Univ Chinese Acad Sci, Coll Astron & Space Sci, Beijing 100049, Peoples R China
3.Univ Sheffield, Sch Math & Stat, Solar Phys & Space Plasma Res Ctr, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England
4.Eotvos Lorand Univ, Dept Astron, POB 32, H-1518 Budapest, Hungary
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Shuhong,Zhang, Jun,Erdelyi, Robertus,et al. Sunspot Light Walls Suppressed by Nearby Brightenings[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,843(1).
APA Yang, Shuhong,Zhang, Jun,Erdelyi, Robertus,Hou, Yijun,Li, Xiaohong,&Yan, Limei.(2017).Sunspot Light Walls Suppressed by Nearby Brightenings.ASTROPHYSICAL JOURNAL LETTERS,843(1).
MLA Yang, Shuhong,et al."Sunspot Light Walls Suppressed by Nearby Brightenings".ASTROPHYSICAL JOURNAL LETTERS 843.1(2017).

入库方式： OAI收割

来源：地质与地球物理研究所

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